The paper presents preliminary results on the characterization of the fracture process zone mechanisms developed by steel fibers in high-strength silica fume concretes. An inverse formulation of a bridged-crack model is used to deduce the stress versus crack separation law from indirect experimental measurements on notched beams. The applicability of the model and the validity of the assumption of a perfectly brittle matrix is studied using test data of notched three-point bend specimens of various sizes reinforced with short smooth fibers.
Bridging mechanisms in high-strength fiber reinforced concrete
MASSABO', ROBERTA;
1998-01-01
Abstract
The paper presents preliminary results on the characterization of the fracture process zone mechanisms developed by steel fibers in high-strength silica fume concretes. An inverse formulation of a bridged-crack model is used to deduce the stress versus crack separation law from indirect experimental measurements on notched beams. The applicability of the model and the validity of the assumption of a perfectly brittle matrix is studied using test data of notched three-point bend specimens of various sizes reinforced with short smooth fibers.
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